b6585eb04c
The code was blindly assuming that Zbb or V implied Zba. While the earlier is practically always true, the later broke some QEMU setups, as V was introduced earlier than Zba.
51 lines
2.0 KiB
C
51 lines
2.0 KiB
C
/*
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* Copyright © 2022 Rémi Denis-Courmont.
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdint.h>
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#include "libavutil/attributes.h"
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#include "libavutil/cpu.h"
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#include "libavcodec/avcodec.h"
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#include "libavcodec/alacdsp.h"
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void ff_alac_decorrelate_stereo_rvv(int32_t *buffer[2], int nb_samples,
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int decorr_shift, int decorr_left_weight);
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void ff_alac_append_extra_bits_mono_rvv(int32_t *buffer[2],
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int32_t *extra_bits_buf[2],
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int extra_bits, int channels,
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int nb_samples);
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void ff_alac_append_extra_bits_stereo_rvv(int32_t *buffer[2],
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int32_t *extra_bits_buf[2],
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int extra_bits, int channels,
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int nb_samples);
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av_cold void ff_alacdsp_init_riscv(ALACDSPContext *c)
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{
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#if HAVE_RVV && (__riscv_xlen == 64)
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int flags = av_get_cpu_flags();
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if ((flags & AV_CPU_FLAG_RVV_I32) && (flags & AV_CPU_FLAG_RVB_ADDR)) {
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c->decorrelate_stereo = ff_alac_decorrelate_stereo_rvv;
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c->append_extra_bits[0] = ff_alac_append_extra_bits_mono_rvv;
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c->append_extra_bits[1] = ff_alac_append_extra_bits_stereo_rvv;
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}
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#endif
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}
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